<!DOCTYPE HTML>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
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<html><head>
  <meta charset="utf-8">
  <title>CSS Grid Test: fit-content() track sizing</title>
  <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1299133">
  <style type="text/css">
body,html { color:black; background:white; font-size:16px; padding:0; margin:0; }

.grid {
  display: grid;
  grid-auto-rows: 5px;
  justify-content: start;
  position: relative;
  border: 1px solid;
}

.c1 { grid-template-columns: fit-content(40%) 25px minmax(100px, 1fr); }
.c2 { grid-template-columns: fit-content(40%) 25px 0 25px minmax(100px, 1fr); }
.c3 { grid-template-columns: fit-content(40%) 25px fit-content(40%) 25px minmax(0px, 1fr); }
.c4 { grid-template-columns: fit-content(40%) 25px 100px 25px minmax(100px, 1fr); }
.c5 { grid-template-columns: fit-content(40%) 25px minmax(0, 1fr) 25px minmax(100px, 1fr); }
.c6 { grid-template-columns: fit-content(calc(1px - 99%)) 25px minmax(0, 1fr) 25px minmax(100px, 1fr); }
.c7 { grid-template-columns: fit-content(40%) 25px fit-content(40%); }

span {
  grid-column: 1 / span 3;
  grid-row: 2;
  height: 2px;
  background: lime;
  min-width: 50px;
}
.c1 span { grid-column:1; }

a {
  display: inline-block;
  width: 50px;
  height: 1px;
}

y {
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 2px;
    background: purple;
    grid-column: 1 / 2;
}
y:nth-of-type(2n) { background: orange; grid-column: 3 / 4; }

  </style>
</head>
<body>

<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c6"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>

<div style="width:502px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c6"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:442px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:382px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:322px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:262px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:202px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c7"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:142px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:82px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:22px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c6"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

<div style="width:2px">
<div class="grid c1"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c2"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c3"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c4"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
<div class="grid c5"><span><a></a><a></a><a></a><a></a></span><y></y><y></y></div>
</div>

</body>
</html>
